<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>块级元素</title>
		<style>
			body {
				background-color: #f3f5f6;
			}
			div {
				background-color: #fff;
				text-align: center;
				font-size: 14px;
				line-height: 35px;
				width: 110px;
			}
			div:hover {
				color: blue;
				background-color: #eaf1ff;
			}
		</style>
	</head>
	<body>
		<!-- 这是错误的写法 -->
		<!-- <p><div>111</div></p> -->
			<div>前端开发</div>
			<div>后端开发</div>
			<div>云计算/大数据</div>
			<div>移动开发</div>
			<div>人工智能</div>
	</body>
</html>